LIGHTING SYSTEM > Rear Fog Light Circuit

for Preparation Click here


DESCRIPTION

The body ECU controls REAR FOG relay when signal is received from the headlight dimmer switch assembly.

WIRING DIAGRAM


B113754E01


INSPECTION PROCEDURE

1.PERFORM ACTIVE TEST BY INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to the ON position and press the intelligent tester main switch ON.

  1. Select the item below in the ACTIVE TEST and then check that the relay operates.

    BODY NO.1 
    Item
    		Test Details
    		Diagnostic Note
    Rear Fog Light Relay
    		Turn Rear fog light relay ON/OFF
    		-



NG
Go to step 2
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

2.INSPECT FUSE

  1. Inspect the RR FOG fuse and TAIL fuse in the instrument panel junction block assembly.



NG
REPLACE FUSE
OK


3.INSPECT RELAY


    B016200

  1. Inspect rear fog light relay continuity.

    1. Measure the resistance according to the value(s) in the table below.

      Resistance:
      Tester connection
      		Condition
      		Specified condition
      3-5
      		Always
      		10 kΩ or higher
      3-5
      		Apply B+ between the terminal 1 and 2
      		Below 1 Ω



    B016200

  1. Inspect tail relay continuity.

    1. Measure the resistance according to the value(s) in the table below.

      Resistance:
      Tester connection
      		Condition
      		Specified condition
      3-5
      		Always
      		10 kΩ or higher
      3-5
      		Apply B+ between the terminal 1 and 2
      		Below 1 Ω



NG
REPLACE RELAY
OK


4.INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (POWER SOURCE CIRCUIT)


  1. Measure the voltage according to the value(s) in the table below.

    Voltage:
    Tester connection
    		Condition
    		Specified condition
    1A-1 - Body ground
    		Always
    		10 to 14 V


    E068612E03



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


  1. Measure the voltage according to the value(s) in the table below.

    Voltage:
    Tester connection
    		Condition
    		Specified condition
    1M-8 - Body ground
    		Always
    		10 to 14 V
    1H-11 - Body ground
    		Light control switch OFF → TAIL
    		Below 1 V → 10 to 14 V


    E068612E24


    E068613E12



NG
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
OK


6.CHECK HARNESS AND CONNECTOR (BODY ECU - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

  1. Disconnect the B7 connector of the multiplex network body ECU and the 1H connector of the instrument panel junction block assembly.

  1. Measure the resistance according to the value(s) in the table below.

Resistance:
Tester connection
Condition
Specified condition
B7-9 - 1H-11
Always
Below 1 Ω


E068613E13



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


7.INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY


  1. Measure the voltage according to the value(s) in the table below.

    Voltage:
    Tester connection
    		Condition
    		Specified condition
    B7-9 - Body ground
    		Light control switch OFF
    Rear fog light switch OFF
    		10 to 14 V
    B7-9 - Body ground
    		Light control switch HEAD
    Rear fog light switch ON
    		Below 1 V


    E068632E16



NG
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (REAR FOG LIGHT CIRCUIT)